Street-sweeper.



,040. PATENTED MAY 5 E. E. HALL.

STREET SWEBPER. APPLICATION FILED SEPT. 20, 1907.

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No. 887,040 PATENTED MAY 5, 1908.

' E. E. HALL. I

STREET SWBEPER.

APPLICATION FILED SEPT. 20, 1907.

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EMMA/bot UNITED STATES ATENT @FFTCE.

ELMER E. HALL, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-THIRD TO GEORGE M. HUBER, OF PITTSBURG, PENNSYLVANIA.

STREET-SWEEPER.

Specification of Letters Patent.

Patented May 5, 1908.

Application filed September 20, 1907. Serial No. 393,773.

To all whom it may concern:

Be it known that I, ELMER E. HALL, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Street-Sweepers, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to street sweepers, the invention having for its object to provide a novel sweeper wherein positive and reliable means are employed for collecting the dirt or sweepings and delivering the same into a suitable vehicle following the sweeper.

The sweeper is provided with a plurality of angularly disposed. rotary brushes driven by the rear axle of the sweeper and a rotary shaft constituting part of a rotary collector or drum, which contacts with the street or ground, and is driven by the movement of the vehicle. The inclination of the rotary brushes is such as to sweep the dirt and debris into the path of a brush that sweeps the dirt and debris into the rotary collector, wherein it is elevated and discharged into a suitable conveyer through which the dirt and debris passes to a cart or vehicle following the sweeper.

The detail construction entering into my invention will be presently described, and then specifically pointed out in the appended claims.

In the drawings: Figure 1 is a plan of the sweeper, illustrating the supporting wheels thereof in dotted lines, Fig. 2 is a side elevation partly in section, Fig. 3 is a vertical longitudinal sectional view of a rotary collector, Fig. 4 is a vertical cross sectional View of the same, Fig. 5 is an elevation of a portion of the conveyer casing as removed from the rotary collector, and Fig. 6 is a vertical cross'sectional view of the collector with the conveyer casing in position.

To put my invention into practice, 1 provide a frame comprising side bars 1 and 2, having their rear ends raised to a plane higher than their forward ends, but in a plane parallel with the remainder of said bars, as indicated at 3. The said side bars 1 and 2 are connected by cross bars 4, and the frame made rigid by means of a plurality of braces 5.

The frame is supported on a suitable run ning gear, 6 designating the axles, and 7 the supporting wheels thereof, said wheels being shown in dotted lines.

The side bars 1 and 2 near their forward ends are provided with hangers 8, having arms 9 and 10, the arm 9 of each hanger being disposed at an angle to the arm 10. In the other arms 10 of the hangers is journaled a shaft 11 carrying upon its outer ends gear wheels 12, the object of which will presently appear.

U on the side bars 1 and 2 above the arms 10 of the hangers 8 are mounted bearings 12 for a transverse shaft 14, carrying sprocket wheels 15 and 16, the latter being in vertical alinement with a sprocket wheel 17 mounted upon the shaft 11. Passing over the sprocket wheels 16 and 17 is an endless sprocket chain 18. v

The cross bar 4 that connects the side bars approximately midway between their ends is provided with brackets 19 for a depending hanger 20 having angularly disposed sides 21 in a plane parallel with the angularlydisposed arms 9 of the hangers 8. J ournaled in the angular-1y disposed sides 21 of the hanger 20 and the arms 9 of the hangers 8 are rotary brushes 22, the shafts of these brushes being provided with beveled gear wheels 23 upon their outer ends, adapted to mesh with the gear wheels 12 of the shaft 11.

The rear elevated ends 3 of the side bars 1 and 2 are provided with bearings 24 for a shaft 25, said shaft carrying a rotary collector or drum, said. drum being mounted on the shaft, adjacent to the side bar 1 of the frame. The rotary collector or drum consists of a cylindrical shell 26 of a diameter corresponding to the rear supporting Wheels of the sweeper, whereby the shell will bear directly upon the street or ground and rotate when the sweeper is moved forward. The outer end of the shell 26 is closed, as at 27, and the shell is provided with a central partition 28 having a central opening 29, and also having its edges or eriphery cut away to provide a plurality of openings 30, these openings admitting dirt and debris to the 1'0- tary collector at the lower edge thereof. Between the outer closed end of the drum or collector and the artition 28 are arranged a plurality of radia ly disposed blades or elevating platforms 31, these blades or platforms carrying the dirt and debris to such a position that it can descend by gravity into the cutaway end 32 of a conveyer casing 33 which protrudes into the central opening 29 of the partition 28. The conveyer casing 33 besides entering the collector extends rearlector and shaft 25 will operate the rotary brushes 22, through the medium of the sprocket chains 36 and 18, shaft 14 and gear wheels 12 and 23.

The angles at which the rotary brushes 22 are disposed causes them to sweep the dirt and debris into the path of an obliquely disposed rotary brush 37, employed for sweeping the dirt and debris into the rotary col lector. This rotary brush 37 is supported by hangers 38 and 39, the former being carried by the side bar 2 of the frame, and the latter suspended from a longitudinally-extending bar 40 attached at its forward end to the central cross bar 4 as at 41. This bar 40 projects rearwardly intermediate the side bars 1 and 2'being supported at its rear end on the axle 6, and also serves as a supportfor the conveyer casing 33, the said bar 40 being provided with a stirrup 42 embracing the conveyer casing 33.

The rotary brush 37 is driven by the gear wheels, sprocket wheels and chains similar to the brushes 22, with the exception that the rotary movement is transmitted from the rear axle 6 of the sweeper.

It is believed that the operation of the sweeper will be apparent from the above description taken in connection with the drawings, and while I have herein illustrated one manner of driving the rotary brushes, I desire it to be understood that such changes in the transmission of power and other minor details of construction as are permissible by the appended claims can be resorted to with- I out departing from the spirit and scope of the invention.

Having now described my invention what I claim as new, is

1. In a sweeper, the combination with su porting wheels, of a frame comprising si e bars and an intermediate cross bar,

. hangers carried by said side bars and cross The 7 bar, rotary brushes journaled in said hangers, said brushes being obliquely-disposed with reference to the line of travel, shafts jour naled in bearings carried by said side bars, a rotary collector carried by one of said shafts and comprising a cylindrical shell having a partition formed therein, said partition having openings formed therein, radially-disposed blades arranged in said shell, a conveyer easing extending into one ofsaid openings, and means actuated by the movement of the sweeper for rotating said brushes.

2. In a sweeper, the combination of supporting wheels, a frame comprising side bars, hangers carried by said frame, rotary brushes journaled in said hangers, and disposed at oblique angles to the path of travel, a rotary collector arranged between said rails and comprising a shell, a partition arranged in said shell and having openings therein, radially-disposed blades in said shell, a conveyer casing carried by said frame, and protruding into one of the openings in said partition, and means actuated by the movement of said collector to operate said brushes.

3. In a sweeper, the combination of supporting Wheels, a frame comprising side bars, hangers carried by said frame, a pair of rotary brushes journaled in said hangers, and disposed at oblique angles to the path of travel, a rotary brush 37 suspended from the frame and disposed parallel with one of the brushes of said pair of brushes, a rotary collector arranged between said side bars for receiving the sweepings of said brushes, a conveyer casing protruding into said collector, means actuated by the movement of said collector for operating the first-named brushes, and means actuated by the forward movement of the sweeper for actuating the last-named brush.

4.. In a sweeper, the combination of sup porting wheels, a frame comprising side bars, hangers carried by said frame, rotary brushes journaled in said hangers, a rotary collector arranged between said bars, and comprising a shell, a partition arranged in said shell and having openings formed therein, radially disposed blades within said shell, a conveyer casing carried by said frame, and protruding into one of the openings in said partition, and means actuated by the movement of said collector and operating said brushes.

In testimony whereof I afiix my signature in the presence of two witnesses.

ELMER E. HALL. /Vitnesses:

F. E. THoMP'soN,

F. W. I'IARTUNG. 

